67680451 has 16 divisors (see below), whose sum is σ = 75785760. Its totient is φ = 60065280.

The previous prime is 67680449. The next prime is 67680479. The reversal of 67680451 is 15408676.

It is a cyclic number.

It is not a de Polignac number, because 67680451 - 2¹ = 67680449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67680451.

It is not an unprimeable number, because it can be changed into a prime (67680401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102061 + ... + 102721.

It is an arithmetic number, because the mean of its divisors is an integer number (4736610).

Almost surely, 2^67680451 is an apocalyptic number.

67680451 is a deficient number, since it is larger than the sum of its proper divisors (8105309).

67680451 is a wasteful number, since it uses less digits than its factorization.

67680451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 67680451 is about 8226.8129308986. The cubic root of 67680451 is about 407.5251488111.

The spelling of 67680451 in words is "sixty-seven million, six hundred eighty thousand, four hundred fifty-one".